Less than two weeks after surprise news that Amazon.com, Inc. acquired the company that created the iPhone reader, Stanza, the Apple App Store landscape has shifted. Stanza--the former number one Book app--is now ranked #3 in the free application category, while the American Bookseller Association's indieBound application is #2.

The indieBound iPhone app allows shoppers to find nearby independent bookstores, browse in-print catalogs, and buy from independent bookstores. In addtion, Amazon announced an upgrade to the Kindle iPhone app today, but neglected to mention the newly-acquired Stanza in the press release.

Here's more from the release: "This optimized Kindle store offers iPhone and iPod touch app users quick and easy access to the Kindle Store's 280,000 books, including 106 of 112 New York Times Best Sellers and most New Releases that are available for $9.99 or less. The Kindle for iPhone application was released on March 4 and within days became the most popular books app in the iPhone App Store."